JP2014080113A - Vehicle opening part opening/closing apparatus and abnormality detection method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle opening part opening/closing apparatus which inhibits the increase of repair costs of the vehicle opening part opening/closing apparatus, and to provide an abnormality detection method of the vehicle opening part opening/closing apparatus which detects abnormality of the vehicle opening part opening/closing apparatus.SOLUTION: A back door opening part opening/closing apparatus 10 includes a spindle unit 16 which moves a back door 12 between a closed position A and a fully opened position B of the back door 12. The spindle unit 16 is supported by a first bracket 18 attached to a rear part of a vehicle body 22 and a second bracket 20 attached to the back door 12. Further, rigidity of the second bracket 20 is set so as to be lower than rigidity of the spindle unit 16.

Description

  The present invention relates to a vehicle opening / closing device and an abnormality detection method for a vehicle opening / closing device.

  Patent Document 1 below discloses a power back door in which a back door that opens and closes a back door opening is electrically operated. Briefly describing the technique described in this document, a vehicle opening / closing device (adjusting device) for opening and closing a back door is a base portion connected to the back door via a gas spring, and a rod-like shape rotated by a motor. And a male screw part. The male screw part is rotated by the motor, and the back door is opened and closed by moving the base part screwed into the male screw part along the axial direction of the male screw part.

Noto 2554817

  However, in the vehicle opening / closing device described in Patent Document 1, if a foreign object is caught between the back door and the back door opening, an excessive load is applied to the vehicle opening / closing device or the like. It is done. If the vehicle opening / closing device is damaged by this load, the repair cost increases. Further, even if the vehicle opening / closing device is damaged, it is conceivable that the vehicle user does not notice the damage.

  In consideration of the above fact, the present invention has a first object to obtain a vehicle opening / closing device capable of suppressing an increase in the repair cost of the vehicle opening / closing device, and detects an abnormality of the vehicle opening / closing device. A second object of the present invention is to provide a method for detecting an abnormality in a vehicle opening / closing device that can be used.

  According to a first aspect of the present invention, a vehicle opening / closing device according to the present invention is provided between a vehicle body and an opening / closing member that opens / closes the vehicle opening, and operates to move the opening / closing member between a closed position and a fully opened position. And at least one of the actuator and the vehicle body and between the actuator and the opening / closing member, and supports the actuator and is set to be lower in rigidity than the actuator. And a bracket.

  According to the first aspect of the present invention, the actuator for moving the opening / closing member between the closed position and the fully opened position is provided between the vehicle body and the opening / closing member. It can be considered that an excessive load is applied to the actuator when a foreign object is sandwiched between the vehicle opening and the opening / closing member while the opening / closing member is moved to the closing position side by operating this actuator. However, in the present invention, the rigidity of the bracket supporting the actuator is set lower than the rigidity of the actuator. Therefore, when a load is applied to the actuator by inserting a foreign object between the vehicle opening and the opening / closing member, the bracket is deformed before the actuator. Thereby, deformation (breakage) of the actuator is suppressed. Moreover, when repairing, it is sufficient to replace only the bracket.

  The vehicle opening / closing device according to a second aspect of the present invention is the vehicle opening / closing device according to the first aspect, wherein the bracket is provided between the actuator and the vehicle body and between the actuator and the opening / closing member. The actuator is supported by a first bracket provided between the actuator and the vehicle body, and a second bracket provided between the actuator and the opening / closing member. The rigidity of the first bracket is set lower than the rigidity of the second bracket, or the rigidity of the second bracket is set lower than the rigidity of the first bracket.

  In the second aspect of the present invention, the actuator for moving the opening / closing member between the closed position and the fully opened position is supported by the first bracket and the second bracket. Here, in the present invention, the rigidity of the first bracket is set lower than the rigidity of the second bracket, or the rigidity of the second bracket is set lower than the rigidity of the first bracket. Therefore, when the rigidity of the first bracket is set lower than the rigidity of the second bracket, when a load is applied to the actuator, the first bracket is deformed before the actuator and the second bracket. Further, when the rigidity of the second bracket is set lower than that of the first bracket, when a load is applied to the actuator, the second bracket is deformed before the actuator and the first bracket. Thereby, deformation (breakage) of the actuator is suppressed. When repairing, only the first bracket or the second bracket may be replaced. Furthermore, when a larger load is applied to the actuator, the first bracket and the second bracket are deformed before the actuator is deformed (damaged). Thereby, the deformation (breakage) of the actuator is further suppressed.

  According to a third aspect of the present invention, in the vehicle opening / closing device according to the first or second aspect, the actuator can be expanded and contracted by rotating a motor. It is a spindle unit.

  In this invention of Claim 3, an opening / closing member opens and closes a vehicle opening part, when a spindle unit expands / contracts. Therefore, when a foreign object is sandwiched between the vehicle opening and the opening / closing member, a load in the axial direction is applied to the spindle unit, but a bending load for bending the spindle unit is difficult to apply. As a result, deformation (breakage) of the spindle unit is suppressed.

  A vehicle opening / closing device according to a fourth aspect of the present invention is the vehicle opening / closing device according to any one of the first to third aspects, wherein the bracket having low rigidity is deformed. A fragile part as a starting point is formed.

  In this invention of Claim 4, the weak part used as a deformation | transformation starting point is bracket-formed. Therefore, the bracket can be deformed with a desired load by appropriately setting the shape and position of the fragile portion. Thereby, the load applied to the actuator is limited to a desired load.

  The abnormality detection method for a vehicle opening / closing device according to the fifth aspect of the present invention is applied to detect an abnormality of the vehicle opening / closing device according to any one of the first to fourth aspects. Detecting that the actuator is stopped before the movement of the opening / closing member to the fully opened position is completed and the actuator can no longer move the opening / closing member to the fully opened position side. Then, it is determined that the bracket has deformed and an abnormality has occurred.

  According to the fifth aspect of the present invention, when the opening / closing member moves toward the fully opened position, the opening / closing member stops before the movement to the fully opened position is completed, and the actuator moves the opening / closing member toward the fully opened position. If it can no longer be moved, it is determined that the bracket is deformed. Thereby, the abnormality of the vehicle opening / closing device is detected before the actuator is deformed (damaged).

  According to a sixth aspect of the present invention, there is provided an abnormality detection method for a vehicle opening / closing device according to the present invention, wherein the abnormality detection method for the vehicle opening / closing device according to the fifth aspect outputs to the abnormality notification means that the abnormality is detected.

  In the present invention described in claim 6, it is output to the abnormality notification means that it is determined that the bracket has deformed and an abnormality has occurred. Thereby, the abnormality of the vehicle opening / closing device is notified to the user of the vehicle.

  The vehicle opening / closing device according to the first aspect of the present invention has an excellent effect that an increase in the repair cost of the vehicle opening / closing device can be suppressed.

  The vehicle opening / closing device according to the second aspect of the present invention has an excellent effect that the breakage of the actuator can be further suppressed.

  The vehicle opening / closing device according to the third aspect of the present invention has an excellent effect that the spindle unit can be prevented from being damaged.

  The vehicle opening / closing device according to the fourth aspect of the present invention has an excellent effect that the breakage of the actuator can be further suppressed.

  The abnormality detection method for a vehicle opening / closing device according to the fifth aspect of the present invention has an excellent effect that an abnormality of the vehicle opening / closing device can be detected.

  The abnormality detection method for the vehicle opening / closing device according to the present invention according to claim 6 has an excellent effect that the user of the vehicle can know the abnormality of the vehicle opening / closing device before the actuator is damaged. .

(A) is the side view which looked at the vehicle body provided with the back door opening part opening / closing apparatus of this embodiment from the side of this vehicle body, (B) is the back door opening part in the closed position of a back door, and a fully open position It is an enlarged side view which shows an opening / closing apparatus. (A) is sectional drawing which shows the spindle unit in the closed position of a back door, (B) is sectional drawing which shows the spindle unit in the fully open position of a back door. (A) is a top view which shows a 1st bracket, (B) is the side view. (A) is a top view which shows a 2nd bracket, (B) is the side view. (A) is sectional drawing which shows the spindle unit in the closed position of a back door, (B) is sectional drawing which shows this spindle unit in the state which the spindle unit locked. (A) is a side view showing the spindle unit supported by the first bracket and the second bracket, and (B) is a side view showing the spindle unit supported by the first bracket and the deformed second bracket. It is a flowchart which shows the abnormality detection method of a back door opening part opening / closing apparatus.

  Next, a vehicle opening / closing device according to an embodiment of the present invention will be described with reference to FIGS. The front side in the vehicle front-rear direction is indicated by an arrow FR, and the upper side in the vehicle vertical direction is indicated by an arrow UP. Moreover, in the following description, when simply indicating the front-rear direction and the up-down direction, the front-rear direction of the vehicle and the up-down direction of the vehicle are indicated.

  As shown in FIGS. 1 (A) and 1 (B), a back door opening / closing device 10 as a vehicle opening / closing device according to the present embodiment expands / contracts along the axial direction, thereby back door as an opening / closing member. 12 includes a spindle unit 16 that opens and closes a back door opening 14 by moving 12 between a closed position A and a fully opened position B, and a first bracket 18 and a second bracket 20 that support the spindle unit 16. It is configured. Hereinafter, first, schematic configurations of the back door opening 14 and the back door 12 will be described, then the spindle unit 16 will be described, and finally the first bracket 18 and the second bracket 20 will be described.

(Schematic configuration of the back door opening 14 and the back door 12)
As shown in FIG. 1A, a back door opening 14 as a vehicle opening having a substantially rectangular frame shape is formed at the rear part of the vehicle body 22, and a back door opening is formed at the rear part of the vehicle body 22. A back door 12 that opens and closes the portion 14 is provided. Further, the base end side of the back door 12 is attached to the upper portion of the back door opening 14 via a hinge (not shown). Further, a locking device (not shown) is provided at the front end side of the back door 12, and the locking device is locked by a striker (not shown) provided at the lower part of the back door opening 14, thereby opening the back door. The portion 14 is closed by the back door 12 (the rotation of the back door 12 is restricted). The back door 12 is urged toward the fully open position by a damper (not shown).

(Spindle unit 16)
As shown in FIGS. 2A and 2B, the spindle unit 16 as an actuator includes a speed reducer motor 28 including a speed reducer 26 that decelerates and outputs the rotation of the motor 24 at a predetermined speed reduction ratio. A shaft 30 that rotates about its axis when the motor 28 with a speed reducer operates and a cylinder 32 through which the shaft 30 is inserted are provided.

  The motor 28 with a speed reducer is configured with the motor 24 and the speed reducer 26 housed in a case 34 formed in a cylindrical shape as main elements. A sensor 36 for detecting the rotation speed of the motor 24 is provided inside the case 34. Furthermore, the connection part 38 connected to the ball joint 52 (refer FIG. 4) of the 2nd bracket 20 mentioned later is provided in the end of case 34. As shown in FIG.

  The shaft 30 is formed in a rod shape, and the base end side of the shaft 30 is fixed to the output shaft of the motor 28 with a speed reducer. Thereby, the shaft 30 is rotationally driven by the motor 28 with a speed reducer. Further, a male screw portion 30A is formed on the outer peripheral portion of the shaft 30 along the axial direction, and a nut 40 is screwed into the male screw portion 30A. Further, a block-shaped stopper member 42 is fixed to the tip of the shaft 30.

  The cylinder 32 is formed in a bottomed cylindrical shape, and a connecting portion 44 connected to a ball joint 48 (see FIG. 3) of the first bracket 18 described later is provided at one end of the cylinder 32. . A nut 40 that is screwed into the male screw portion 30 </ b> A of the shaft 30 is fixed to the other end (open end portion) of the cylinder 32.

  The spindle unit 16 described above is controlled by an ECU (not shown). When the motor 24 is rotated in one direction by the ECU, the rotation of the motor 24 is reduced to a predetermined number of rotations by the speed reducer 26 and transmitted to the shaft 30. As a result, the shaft 30 is inserted into the cylinder 32. As a result, as shown in FIG. 2A, the entire length of the spindle unit 16 is reduced. On the other hand, when the motor 24 rotates in the other direction, the shaft 30 extends from the cylinder 32. As a result, as shown in FIG. 2B, the entire length of the spindle unit 16 is extended. Further, when the back door 12 is moved to the fully open position B (see FIG. 1B) due to the extension of the spindle unit 16, as shown in FIG. 40 so as to have a clearance of a predetermined distance C.

(First bracket 18)
As shown in FIGS. 1A and 1B, the first bracket 18 as a bracket is provided between the spindle unit 16 and the vehicle body 22, and the first bracket 18 is a part of the spindle unit 16. Supports one end. More specifically, as shown in FIGS. 3A and 3B, the first bracket 18 includes a base 46 formed by pressing a steel plate material, and a ball attached to the base 46. And a joint 48.

  The base 46 includes a rectangular plate-like base portion 46A. The base 46A is formed with a circular insertion hole 46B through which a bolt (not shown) is inserted and an elliptical insertion hole 46C. The base portion 46A is attached to the rear portion of the vehicle body 22 via a bolt. As a result, the first bracket 18 is fixed to the rear portion of the vehicle body 22 (see FIG. 1).

  The base 46 includes a flange portion 46D that bends and extends from one end in the short direction and one end in the longitudinal direction of the base portion 46A toward the plate thickness direction of the base portion 46A. Further, a circular through hole 46E is formed in the flange portion 46D, and a ball joint 48 is inserted into the through hole 46E. Furthermore, the ball joint 48 is fixed to the flange portion 46D by caulking the base end side of the ball joint 48. Further, in a state where the ball joint 48 is fixed to the flange portion 46D, the ball portion 48A formed at the tip of the ball joint 48 is disposed at a position facing the base portion 46A and the flange portion 46D.

  In addition, a convex bead 46F that protrudes toward the ball portion 48A side of the ball joint 48 is formed on the base portion 46A and the flange portion 46D.

  The rigidity of the first bracket 18 is set to be lower than the rigidity of the spindle unit 16 (see FIG. 2).

(Second bracket 20)
As shown in FIGS. 1A and 1B, the second bracket 20 as a bracket is provided between the spindle unit 16 and the back door 12, and the second bracket 20 is connected to the spindle unit 16. The other end is supported. As shown in FIGS. 4A and 4B, the second bracket 20 includes a base 50 formed by pressing a steel plate material, like the first bracket 18 described above, and a base And a ball joint 52 attached to 50.

  The base 50 is formed in a long rectangular shape when viewed from the thickness direction of the base 50, and the base 50 is provided with a first attachment portion 50 </ b> A attached to the back door 12 via a bolt (not shown). Furthermore, a circular insertion hole 50B through which a bolt is inserted is formed in the first attachment portion 50A. In addition, the base 50 includes a first extending portion 50D that extends from the end of the first mounting portion 50A toward one side in the longitudinal direction of the base 50 via the stepped portion 50C. Further, the first extending portion 50D is provided with a tongue-like cushion mounting portion 50E, and a cushion 54 formed using an elastic member such as a rubber material is attached to the cushion mounting portion 50E. ing.

  In addition, the base 50 extends from the end portion of the first extending portion 50D (the end portion on one side in the longitudinal direction of the base 50) toward the one side in the longitudinal direction of the base 50 via the stepped portion 50F. The existing part 50G is provided. A rectangular opening 50H serving as a fragile portion is formed in an intermediate portion of the second extending portion 50G. When a load greater than or equal to a predetermined value is applied to a ball joint 52, which will be described later, stress concentrates on the portion of the second extending portion 50G where the opening 50H is formed, and the portion is bent (becomes a deformation starting point). It is a configuration.

  Further, the base 50 is provided with a second attachment portion 50I attached to the back door 12 via a bolt (not shown). The second mounting portion 50I is formed with an elliptical insertion hole 50J through which a bolt is inserted. Further, the base 50 is respectively formed from an end portion of the second mounting portion 50I (end portion on the other side in the longitudinal direction of the base 50) and an end portion of the second extension portion 50G (end portion on one side in the longitudinal direction of the base 50). An inclined wall portion 50K and an inclined wall portion 50L that are inclined and extend toward the plate thickness direction of the second mounting portion 50I and the second extending portion 50G are provided. Further, the base 50 includes a top wall portion 50M that connects the distal end portion of the inclined wall portion 50K and the distal end portion of the inclined wall portion 50L. A circular through hole 50N is formed in the top wall portion 50M, and a ball joint 52 is inserted into the through hole 50N. Further, the ball joint 52 is fixed to the top wall portion 50M by caulking the base end side of the ball joint 52. Further, in a state where the ball joint 52 is fixed to the top wall portion 50M, the ball portion 52A formed at the tip of the ball joint 52 is separated from the top wall portion 50M, the first attachment portion 50A, and the second attachment portion 50I. Arranged in the direction.

  The rigidity of the second bracket described above is adjusted by the shape of the base 50 constituting the second bracket and the opening 50H formed in the second extending portion 50G. As a result, the rigidity of the second bracket 20 is set lower than the rigidity of the first bracket 18 described above. That is, the second bracket 20 is set to be deformed earlier than the first bracket 18 when an excessive load is applied to the first bracket 18 and the second bracket 20.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIGS. 1A and 1B, in this embodiment, the spindle unit 16 that moves the back door 12 between the closed position A and the fully open position B is provided between the vehicle body 22 and the back door 12. It is provided in between. When the spindle unit 16 is operated, when a foreign object is caught between the back door opening 14 and the back door 12 when the back door 12 is moved to the closing position A side, the spindle unit 16 is excessively large. It is conceivable that a load is applied. However, in the present embodiment, the rigidity of the second bracket 20 that supports the spindle unit 16 is set to be lower than the rigidity of the spindle unit 16. Therefore, when a load is applied to the spindle unit 16 by inserting a foreign object between the back door opening 14 and the back door 12, as shown in FIGS. 6A and 6B, the second bracket 20 is It is deformed before the spindle unit 16. Thereby, deformation (breakage) of the spindle unit 16 is suppressed. Further, when repairing, only the second bracket 20 may be replaced. That is, in this embodiment, damage to the expensive spindle unit 16 is suppressed, and as a result, an increase in the repair cost of the back door opening / closing device 10 can be suppressed.

  In the present embodiment, the spindle unit 16 that moves the back door 12 between the closed position A and the fully opened position B is supported by the first bracket 18 and the second bracket 20 having the above-described configuration. Here, in the present embodiment, the rigidity of the second bracket 20 is set lower than the rigidity of the first bracket 18. Therefore, when a load is applied to the spindle unit 16, the second bracket 20 is deformed before the spindle unit 16 and the first bracket 18. Thereby, deformation (breakage) of the spindle unit 16 is suppressed. Further, when repairing, only the second bracket 20 may be replaced. Furthermore, when a larger load is applied to the spindle unit 16, the first bracket 18 and the second bracket 20 are deformed before the spindle unit 16 is deformed (damaged). Thereby, the deformation (breakage) of the spindle unit 16 can be further suppressed.

  Further, in the present embodiment, the back door 12 opens and closes the back door opening 14 as the spindle unit 16 expands and contracts. Therefore, when a foreign object is sandwiched between the back door opening 14 and the back door 12, a load in the axial direction is applied to the spindle unit 16, but a bending load for bending the spindle unit 16 is difficult to apply. As a result, in this embodiment, deformation (breakage) of the spindle unit 16 can be further suppressed.

  Moreover, in this embodiment, the opening part 50H used as a deformation | transformation starting point is formed in the base 50 of the 2nd bracket 20 (refer FIG. 4). Therefore, the second bracket 20 can be deformed with a desired load by appropriately setting the shape and position of the opening 50H. Thereby, the load applied to the spindle unit 16 is limited to a desired load, and as a result, damage to the spindle unit 16 can be further suppressed.

  In the present embodiment, the example in which the rigidity of the second bracket 20 is set lower than the rigidity of the first bracket 18 has been described, but the present invention is not limited to this, and the rigidity of the first bracket 18 is the first. It is good also as a structure set lower than the rigidity of 2 brackets 20.

  In the present embodiment, the example in which the opening 50H is provided in the base 50 of the second bracket 20 has been described. However, the present invention is not limited to this, and the opening 50H may not be provided. Further, the rigidity of the second bracket 20 may be adjusted by providing a thin portion or the like as a fragile portion on the base 50.

  Furthermore, in this embodiment, although the example which supported the spindle unit 16 using the 1st bracket 18 and the 2nd bracket 20 was demonstrated, this invention is not limited to this. For example, one end of the spindle unit 16 may be directly fixed to the vehicle body 22 or the back door 12 and the other end of the spindle unit 16 may be supported by a bracket having a lower rigidity than the spindle unit 16.

  In the present embodiment, the example in which the back door 12 is moved between the closed position A and the fully opened position B using the spindle unit 16 described above has been described. However, the present invention is not limited to this, Other actuators that move the door 12 may be used.

  Furthermore, in this embodiment, although the example which applied this invention to the back door opening part opening / closing apparatus 10 has been demonstrated, this invention is not limited to this. For example, a side door opening / closing device for opening / closing a side door opening provided at the side of a vehicle body and a trunk opening / closing device for opening / closing a trunk opening provided at the rear of a sedan type vehicle body The present invention can also be applied.

(Abnormality detection method for the back door opening / closing device 10)
Next, an abnormality detection method for the back door opening / closing device 10 will be described with reference to FIG.

  As shown in FIGS. 2 and 7, in step S <b> 001, it is determined whether or not the back door 12 is closing the back door opening 14 by a sensor provided in a locking device or the like of the back door 12. If an affirmative determination is made in step S001 (when the back door 12 closes the back door opening 14 (the back door 12 is positioned at the closed position A)), the ECU that controls the spindle unit 16 The position is recognized as the origin of the back door 12 (origin O of the spindle unit 16) (step S002).

  Next, in step S003, it is determined whether or not a command signal for opening the back door 12 is input to the ECU. This command signal is input to the ECU when the user of the vehicle operates a switch or the like. If an affirmative determination is made in step S003 (when a command signal for opening the back door 12 is input), the motor 24 of the spindle unit 16 is energized and the stroke amount (X) of the spindle unit 16 is detected. (Steps S004 and S005). The stroke amount (X) of the spindle unit 16 is detected by the sensor 36 counting the number of rotations of the motor 24.

  Next, in step S006, it is determined whether or not the spindle unit 16 has reached a predetermined stroke amount (X1). In the state where no abnormality has occurred in the back door opening / closing device 10, the back door 12 is set to be in the fully open position B when the stroke amount of the spindle unit 16 reaches X1. If an affirmative determination is made in step S006 (when it is determined that the stroke amount of the spindle unit 16 has reached X1), the power supply to the motor 24 is interrupted by the ECU (step S007). On the other hand, if a negative determination is made in step S006 (when it is determined that the stroke amount of the spindle unit 16 has not reached X1), the operation (stroke) of the spindle unit 16 is stopped (locked) in step S008. It is determined whether or not. This determination is made by monitoring the amount of change per unit time of the rotational speed of the motor 24 counted by the sensor 36. If a negative determination is made in step S008 (when the operation of the spindle unit 16 is not stopped (when the spindle unit 16 is smoothly stroked)), energization to the motor 24 is maintained and the spindle unit 16 is again turned on. Is determined whether or not a predetermined stroke amount (X1) has been reached (step S006).

  As described above, in a state where no abnormality has occurred in the back door opening / closing device 10, the back door 12 is moved from the closed position A to the fully opened position B through the above steps.

  Next, as shown in FIG. 6B, a case where the second bracket 20 is deformed (a case where an abnormality has occurred in the back door opening / closing device 10) will be described.

  As shown in FIGS. 5 and 7, first, similarly to the case where no abnormality has occurred in the back door opening / closing device 10 described above, in step S 001, the back door 12 closes the back door opening 14. It is determined whether or not there is (step S001). When the back door 12 closes the back door opening 14 (the back door 12 is located at the closed position A), the ECU that controls the spindle unit 16 sets the position to the origin of the back door 12 (spindle unit 16 origin O) (step S002). As shown in FIG. 5A, when the second bracket 20 is deformed and when the second bracket 20 is not deformed (see FIG. 2A), the position shifts to the origin position ( A distance L) occurs.

  Next, in step S003, it is determined whether or not a command signal for opening the back door 12 is input to the ECU. When a command signal for opening the back door 12 is input to the ECU, the motor 24 of the spindle unit 16 is energized (step S004). Then, the stroke amount (X) of the spindle unit 16 is detected (step S005).

  Next, in step S006, it is determined whether or not the spindle unit 16 has reached a predetermined stroke amount (X1). When it is determined that the stroke amount of the spindle unit 16 has not reached X1, it is determined whether or not the operation (stroke) of the spindle unit 16 is stopped (locked) (step S008). When the operation of the spindle unit 16 is not stopped (when the spindle unit 16 strokes smoothly), energization to the motor 24 is maintained.

  Here, as shown in FIG. 5B, when the stopper member 42 comes into contact with the nut 40 before the spindle unit 16 reaches the predetermined stroke amount (X1), the spindle unit 16 further extends. I can't do that. That is, the spindle unit 16 cannot move the back door 12 further to the fully open position B (see FIG. 1). This state is affirmed in step S008 (determined that the operation (stroke) of the spindle unit 16 is stopped (locked)). That is, it is determined that an abnormality has occurred in the back door opening / closing device 10. In this case, energization to the motor 24 is interrupted, and an abnormality signal is output to an abnormality notification means such as a display board or a buzzer provided in the vehicle (steps S009 and S010).

  As described above, in this embodiment, the abnormality of the back door opening / closing device 10 is detected before the spindle unit 16 constituting a part of the back door opening / closing device 10 is deformed (damaged). Can do. Furthermore, in this embodiment, the user of the vehicle can know the abnormality of the back door opening / closing device 10 by a display board, a buzzer, or the like.

  In the present embodiment, when it is determined that an abnormality has occurred in the back door opening / closing device 10, an abnormality signal is output to an abnormality notification means such as a display board or a buzzer provided in the vehicle. As described above, the abnormality notification means need not be provided.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

10 Back door opening and closing device (vehicle opening and closing device)
12 Back door (opening / closing member)
14 Back door opening (vehicle opening)
16 Spindle unit (actuator)
18 First bracket (bracket)
20 Second bracket (bracket)
22 body
24 motor
50H opening (fragile part)
A Closed position
B Fully open position

Claims (6)

An actuator that is provided between a vehicle body and an opening / closing member that opens and closes the vehicle opening, and moves the opening / closing member between a closed position and a fully open position of the opening / closing member by operating;
A bracket that is provided between at least one of the actuator and the vehicle body and between the actuator and the opening and closing member, supports the actuator, and has a lower rigidity than the actuator; and
A vehicle opening / closing device comprising: The bracket is provided both between the actuator and the vehicle body and between the actuator and the opening / closing member,
The actuator is supported by a first bracket provided between the actuator and the vehicle body and a second bracket provided between the actuator and the opening / closing member,
2. The vehicle opening / closing device according to claim 1, wherein the rigidity of the first bracket is set lower than the rigidity of the second bracket, or the rigidity of the second bracket is set lower than the rigidity of the first bracket. .   The vehicle opening / closing device according to claim 1 or 2, wherein the actuator is a spindle unit that can be expanded and contracted by rotation of a motor.   The vehicle opening / closing device according to any one of claims 1 to 3, wherein a weakened portion serving as a deformation starting point is formed on the bracket having a low rigidity. It is applied to detect an abnormality in the vehicle opening / closing device according to any one of claims 1 to 4.
By detecting that the operation of the actuator is stopped before the movement of the opening / closing member to the fully opened position is completed and the actuator can no longer move the opening / closing member to the fully opened position side, An abnormality detection method for a vehicle opening / closing device that determines that an abnormality has occurred due to deformation of the bracket. 6. The abnormality detection method for a vehicle opening / closing device according to claim 5, wherein the abnormality detection means outputs to the abnormality notification means.

Images